Geoff Wearmouth
@warmtoffee.bsky.social
Press plastic for a living but love the touch of rubber. Assembler of Gosh Wonderful and Looking Glass ZX Spectrum ROMs.
Reposted by Geoff Wearmouth
Ever wanted to know how your ZX81 ranked against a CRAY supercomputer from 1984? Assuming your eyesight is good enough, now you know.
November 13, 2025 at 4:37 PM
Ever wanted to know how your ZX81 ranked against a CRAY supercomputer from 1984? Assuming your eyesight is good enough, now you know.
Reposted by Geoff Wearmouth
Here's a Sinclair Microdrive cartridge with a UK pound coin for comparison. We trusted these mini-magnetic tape loops with our valuable data in the 1980s. Totally insane! To be fair, they were actually quite reliable. The tape loop is 5 metres long and stores a minimum of 85 to 100KBytes of data.
November 6, 2025 at 8:01 PM
Here's a Sinclair Microdrive cartridge with a UK pound coin for comparison. We trusted these mini-magnetic tape loops with our valuable data in the 1980s. Totally insane! To be fair, they were actually quite reliable. The tape loop is 5 metres long and stores a minimum of 85 to 100KBytes of data.
Reposted by Geoff Wearmouth
Reposted by Geoff Wearmouth
One of the most difficult BBC Micro books to obtain. Is there anyone out there that has a copy? I managed to get an ex-library copy that was re-bound. Curious to know how many are actually around. It was withdrawn from sale for legal reasons - it contained an annotated disassembly of BBC BASIC.
October 9, 2025 at 1:40 PM
One of the most difficult BBC Micro books to obtain. Is there anyone out there that has a copy? I managed to get an ex-library copy that was re-bound. Curious to know how many are actually around. It was withdrawn from sale for legal reasons - it contained an annotated disassembly of BBC BASIC.
This is the most exciting ZX81 BASIC program ever. It runs on any Sinclair ZX81 model - TS1000 etc. It compares the upcoming LG81 ROM with the host ZX81 ROM.
This BASIC program should be downloadable soon but if you want to see how bad your ZX81 is get typing. Developed on iOS ZX81 by Kevin Palser.
This BASIC program should be downloadable soon but if you want to see how bad your ZX81 is get typing. Developed on iOS ZX81 by Kevin Palser.
October 8, 2025 at 7:18 PM
This is the most exciting ZX81 BASIC program ever. It runs on any Sinclair ZX81 model - TS1000 etc. It compares the upcoming LG81 ROM with the host ZX81 ROM.
This BASIC program should be downloadable soon but if you want to see how bad your ZX81 is get typing. Developed on iOS ZX81 by Kevin Palser.
This BASIC program should be downloadable soon but if you want to see how bad your ZX81 is get typing. Developed on iOS ZX81 by Kevin Palser.
Reposted by Geoff Wearmouth
Download The Looking Glass ZX Spectrum ROM V1.08 from
spectrumcomputing.co.uk/entry/44586/...
speccy4ever.speccy.org/_CMS.htm
ZX Spectrum ROMs and games.
spectrumcomputing.co.uk/entry/44586/...
speccy4ever.speccy.org/_CMS.htm
ZX Spectrum ROMs and games.
Looking Glass - Spectrum Computing
Looking Glass for ZX-Spectrum 16K/48K (Geoff Wearmouth/UK, ?) by Geoff Wearmouth
spectrumcomputing.co.uk
October 5, 2025 at 8:13 PM
Download The Looking Glass ZX Spectrum ROM V1.08 from
spectrumcomputing.co.uk/entry/44586/...
speccy4ever.speccy.org/_CMS.htm
ZX Spectrum ROMs and games.
spectrumcomputing.co.uk/entry/44586/...
speccy4ever.speccy.org/_CMS.htm
ZX Spectrum ROMs and games.
This is the most revealing ZX Spectrum BASIC program ever. It runs on any Sinclair model - Spectrum, TS2068, or any clone.
It compares the error-free Looking Glass ROM v1.08 against the host ZX ROM. It should be downloadable by the weekend but if you want to see how bad it your Speccy is get typing.
It compares the error-free Looking Glass ROM v1.08 against the host ZX ROM. It should be downloadable by the weekend but if you want to see how bad it your Speccy is get typing.
October 8, 2025 at 11:49 AM
This is the most revealing ZX Spectrum BASIC program ever. It runs on any Sinclair model - Spectrum, TS2068, or any clone.
It compares the error-free Looking Glass ROM v1.08 against the host ZX ROM. It should be downloadable by the weekend but if you want to see how bad it your Speccy is get typing.
It compares the error-free Looking Glass ROM v1.08 against the host ZX ROM. It should be downloadable by the weekend but if you want to see how bad it your Speccy is get typing.
Remember in the 1980s when Sinclair and Amstrad dropped the price of The ZX Spectrum. Well RGL have continued the tradition and you can buy The Spectrum for £84.99 - 5% off. Just download the Looking Glass ROM V1.08 from Spectrum Computing or speccy4ever
www.smythstoys.com/uk/en-gb/gam...
www.smythstoys.com/uk/en-gb/gam...
speccy4ever.com
October 5, 2025 at 7:56 PM
Remember in the 1980s when Sinclair and Amstrad dropped the price of The ZX Spectrum. Well RGL have continued the tradition and you can buy The Spectrum for £84.99 - 5% off. Just download the Looking Glass ROM V1.08 from Spectrum Computing or speccy4ever
www.smythstoys.com/uk/en-gb/gam...
www.smythstoys.com/uk/en-gb/gam...
Back in 2014 Dr. Steve Vickers made some lecture slides available on his University website. I used his decimal to binary conversion routines to expand on a floating point display program I had typed in. This created a virtual computer with correct exponent and mantissa to test my ZX Spectrum ROMs.
September 24, 2025 at 10:49 PM
Back in 2014 Dr. Steve Vickers made some lecture slides available on his University website. I used his decimal to binary conversion routines to expand on a floating point display program I had typed in. This created a virtual computer with correct exponent and mantissa to test my ZX Spectrum ROMs.
Reposted by Geoff Wearmouth
The very brief mention of MGT's ZX Spectrum Emulator in the #SAMCoupe user guide here, being called "a special program". For the initial emulator MGT had to create a compatible #ZXSpectrum ROM from scratch, as the actual ZX ROM's copyright was held by Amstrad. The compatible ROM wasn't fully...
SAM Coupe User Guide
READ: https://archive.org/stream/NH2021_SamCoupe_UsersGuide.pdf/page/n25/mode/2up #zxspectrum #retrogaming
READ: https://archive.org/stream/NH2021_SamCoupe_UsersGuide.pdf/page/n25/mode/2up #zxspectrum #retrogaming
September 22, 2025 at 6:08 PM
The very brief mention of MGT's ZX Spectrum Emulator in the #SAMCoupe user guide here, being called "a special program". For the initial emulator MGT had to create a compatible #ZXSpectrum ROM from scratch, as the actual ZX ROM's copyright was held by Amstrad. The compatible ROM wasn't fully...
The Looking Glass ROM V1.08 for the 48K ZX Spectrum is now available for download with documentation.
speccy4ever.speccy.org/_CMS.htm
This is the most accurate ROM ever available for the ZX Spectrum and is the equal to Microsoft Binary Format 9-digit BASIC. Say goodbye to dodgy figures.
speccy4ever.speccy.org/_CMS.htm
This is the most accurate ROM ever available for the ZX Spectrum and is the equal to Microsoft Binary Format 9-digit BASIC. Say goodbye to dodgy figures.
September 23, 2025 at 11:45 AM
The Looking Glass ROM V1.08 for the 48K ZX Spectrum is now available for download with documentation.
speccy4ever.speccy.org/_CMS.htm
This is the most accurate ROM ever available for the ZX Spectrum and is the equal to Microsoft Binary Format 9-digit BASIC. Say goodbye to dodgy figures.
speccy4ever.speccy.org/_CMS.htm
This is the most accurate ROM ever available for the ZX Spectrum and is the equal to Microsoft Binary Format 9-digit BASIC. Say goodbye to dodgy figures.
Reposted by Geoff Wearmouth
I am no accountant, but this seems very wrong #PostOfficeScandal www.computerweekly.com/news/3666313...
‘Utter madness’ as Post Office paid law firm double the cost of scandal public inquiry | Computer Weekly
The Post Office legal representation at public inquiry into Horizon scandal cost twice as much as the actual inquiry
www.computerweekly.com
September 15, 2025 at 12:31 PM
I am no accountant, but this seems very wrong #PostOfficeScandal www.computerweekly.com/news/3666313...
Steve Vickers: "The Fundamental Theorem of Calculus: point-free"
YouTube video by Topos Institute
www.youtube.com
September 19, 2025 at 10:48 PM
Reposted by Geoff Wearmouth
Pour Homme this Christmas. Girls love the scent of a man who loves his heatsink. Exquisite whiff of ZX Spectrum, ZX81, Commodore 64 and the ZX80. They have missed a trick by omitting the ZX Printer.
I know, the first programs that I typed in were written by girls
boingboing.net/2025/09/16/f...
I know, the first programs that I typed in were written by girls
boingboing.net/2025/09/16/f...
Fragrances inspired by classic home computers of the 1980s
Andrews UK has considered the odor of nostalgia, and now makes available four classic fragrances for the discerning, aging gamer.
boingboing.net
September 16, 2025 at 11:32 PM
Pour Homme this Christmas. Girls love the scent of a man who loves his heatsink. Exquisite whiff of ZX Spectrum, ZX81, Commodore 64 and the ZX80. They have missed a trick by omitting the ZX Printer.
I know, the first programs that I typed in were written by girls
boingboing.net/2025/09/16/f...
I know, the first programs that I typed in were written by girls
boingboing.net/2025/09/16/f...
Reposted by Geoff Wearmouth
Curious connections: Voyager probes and Sinclair ZX Spectrum
Curious connections: Voyager probes and Sinclair ZX Spectrum
There's more than warm power supplies and wonky capacitors
Opinion The Voyager space probes are dear to the hearts of every geek who can remember the 1980s.…
dlvr.it
September 15, 2025 at 7:19 AM
Curious connections: Voyager probes and Sinclair ZX Spectrum
Reposted by Geoff Wearmouth
🚀 We’ve just passed 2,000 recreated videos from the RZX Archive! 🎉
Love ZX Spectrum gameplay? Come hang out with us on YouTube 👉 www.youtube.com/@SpectrumCom...
Love ZX Spectrum gameplay? Come hang out with us on YouTube 👉 www.youtube.com/@SpectrumCom...
Spectrum Computing
Here, we present a collection of re-recorded RZX Playback videos. We are deeply grateful to the late Daren Pearcy for his dedication to the RZX format, and this channel serves as our tribute to his me...
www.youtube.com
September 11, 2025 at 7:39 PM
🚀 We’ve just passed 2,000 recreated videos from the RZX Archive! 🎉
Love ZX Spectrum gameplay? Come hang out with us on YouTube 👉 www.youtube.com/@SpectrumCom...
Love ZX Spectrum gameplay? Come hang out with us on YouTube 👉 www.youtube.com/@SpectrumCom...
Reposted by Geoff Wearmouth
Read all 601 Computer Weekly articles, since 2009, about the Post Office scandal and its aftermath. I keep this guide up to date and links to every article at the bottom www.computerweekly.com/feature/Post...
Post Office Horizon scandal explained: Everything you need to know | Computer Weekly
Computer Weekly has investigated the Post Office Horizon scandal since 2008 and is, in fact, part of the story. This guide covers essential information about the scandal.
www.computerweekly.com
September 10, 2025 at 1:38 PM
Read all 601 Computer Weekly articles, since 2009, about the Post Office scandal and its aftermath. I keep this guide up to date and links to every article at the bottom www.computerweekly.com/feature/Post...
The ZX Spectrum converts decimal fractions to binary with a well established routine that multiplies each digit by a relevant smaller fraction .1, .01, .001 etc. This achieves maximum accuracy…
On the Binary Coded Decimal, Atari 400 and Sinclair calculators !!!
What is it doing on the ZX Spectrum ?
On the Binary Coded Decimal, Atari 400 and Sinclair calculators !!!
What is it doing on the ZX Spectrum ?
September 10, 2025 at 9:27 AM
The ZX Spectrum converts decimal fractions to binary with a well established routine that multiplies each digit by a relevant smaller fraction .1, .01, .001 etc. This achieves maximum accuracy…
On the Binary Coded Decimal, Atari 400 and Sinclair calculators !!!
What is it doing on the ZX Spectrum ?
On the Binary Coded Decimal, Atari 400 and Sinclair calculators !!!
What is it doing on the ZX Spectrum ?
I get my first two ZX Spectrum programs published in the letters page of Popular Computing Weekly 1985
September 7, 2025 at 10:53 AM
I get my first two ZX Spectrum programs published in the letters page of Popular Computing Weekly 1985
Reposted by Geoff Wearmouth
Spectrum 48+ Manual
READ: https://archive.org/stream/NH2021_spectrumplusmanual.pdf/page/n49/mode/2up #zxspectrum #retrogaming
READ: https://archive.org/stream/NH2021_spectrumplusmanual.pdf/page/n49/mode/2up #zxspectrum #retrogaming
September 2, 2025 at 10:05 AM
Spectrum 48+ Manual
READ: https://archive.org/stream/NH2021_spectrumplusmanual.pdf/page/n49/mode/2up #zxspectrum #retrogaming
READ: https://archive.org/stream/NH2021_spectrumplusmanual.pdf/page/n49/mode/2up #zxspectrum #retrogaming
“Highway 61 Revisited” was released 60 years ago. Do you know that Bob Dylan was holding his Ray-Bans in his right hand ?
August 31, 2025 at 12:20 AM
“Highway 61 Revisited” was released 60 years ago. Do you know that Bob Dylan was holding his Ray-Bans in his right hand ?
That iconic scene in Micro Men where the Acorn wire is cut as the BBC enter the building is told for the first time by Hermann Hauser back
in 1982! A must-read interview that hasn’t aged.
in 1982! A must-read interview that hasn’t aged.
ZX History - August 1982: Acron’s Hermann Hauser gives his take as to why the BBC chose Acorn over Sinclair to make their BBC Micro.
READ: (1/2) #zxspectrum #retrogaming
READ: (1/2) #zxspectrum #retrogaming
August 26, 2025 at 12:26 AM
That iconic scene in Micro Men where the Acorn wire is cut as the BBC enter the building is told for the first time by Hermann Hauser back
in 1982! A must-read interview that hasn’t aged.
in 1982! A must-read interview that hasn’t aged.
Reposted by Geoff Wearmouth
Website Updates 🚀
- Missing RZX recordings now on YouTube (750+ videos): www.youtube.com/@SpectrumCom...
- Collapsible sections on detail page, for easier navigation.
- Direct links to preservation tool with prefilled details, such as title and ID.
- Quick Search knows your last search type.
Enjoy!
- Missing RZX recordings now on YouTube (750+ videos): www.youtube.com/@SpectrumCom...
- Collapsible sections on detail page, for easier navigation.
- Direct links to preservation tool with prefilled details, such as title and ID.
- Quick Search knows your last search type.
Enjoy!
March 15, 2025 at 6:47 PM
Website Updates 🚀
- Missing RZX recordings now on YouTube (750+ videos): www.youtube.com/@SpectrumCom...
- Collapsible sections on detail page, for easier navigation.
- Direct links to preservation tool with prefilled details, such as title and ID.
- Quick Search knows your last search type.
Enjoy!
- Missing RZX recordings now on YouTube (750+ videos): www.youtube.com/@SpectrumCom...
- Collapsible sections on detail page, for easier navigation.
- Direct links to preservation tool with prefilled details, such as title and ID.
- Quick Search knows your last search type.
Enjoy!
Newsgroup comp.sys.sinclair could be informative, even the ZX Spectrum ROM author popped in once. Modern Spectrum designer Chris Smith was sharing his expert knowledge for free thirty years ago from University. Jolly place in its time.
The ZX Spectrum On Your PC
READ: https://archive.org/stream/NH2021_ZXSpectrumOnYourPCThe.pdf/page/n73/mode/2up #zxspectrum #retrogaming
READ: https://archive.org/stream/NH2021_ZXSpectrumOnYourPCThe.pdf/page/n73/mode/2up #zxspectrum #retrogaming
August 17, 2025 at 9:04 AM
Newsgroup comp.sys.sinclair could be informative, even the ZX Spectrum ROM author popped in once. Modern Spectrum designer Chris Smith was sharing his expert knowledge for free thirty years ago from University. Jolly place in its time.